Home / 3,781.28-5,671.92-1,591.55

Finding the Fourth Proportional to 3,781.28, 5,671.92 and 1,591.55

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Solution

The fourth proportional to 3,781.28, 5,671.92 and 1,591.55 is: 2,387.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.28 : 5,671.92 = 1,591.55 : x
  2. Step 2: Convert to fraction form
    3,781.28/5,671.92 = 1,591.55/x
  3. Step 3: Cross multiply
    3,781.28x = 5,671.92 × 1,591.55
  4. Step 4: Simplify right side
    3,781.28x = 9,027,107.96
  5. Step 5: Solve for x
    x = 9,027,107.96/3,781.28
  6. Step 6: Final answer
    x = 2,387.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.